MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The earth emits radiation with greatest intensity at: |
| A. | Infrared wavelengths |
| B. | Radio wavelengths |
| C. | Visible wavelengths |
| D. | Ultraviolet wavelengths |
| Answer» B. Radio wavelengths | |
| 2. |
Animal dung is __________ waste. |
| A. | Biodegradable |
| B. | Non biodegradable |
| C. | Toxic |
| D. | Hazardous |
| Answer» B. Non biodegradable | |
| 3. |
If the amount of energy lost by the earth to space each year were not approximately equal to that received: |
| A. | The atmosphere's average temperature would change |
| B. | The length of the year would change |
| C. | The sun's output would change |
| D. | The mass of the atmosphere would change |
| Answer» B. The length of the year would change | |
| 4. |
The heating of earth's atmosphere due to trapped radiation is known as |
| A. | Global warming |
| B. | Glass-House effect |
| C. | Thermal effect |
| D. | Green House effect |
| Answer» E. | |
| 5. |
World wildlife week is observed during |
| A. | First week of October |
| B. | Last week of October |
| C. | Third week of October |
| D. | First week of September |
| Answer» B. Last week of October | |
| 6. |
The capacity to do work is termed as |
| A. | Power |
| B. | Force |
| C. | Strength |
| D. | Energy |
| Answer» E. | |
| 7. |
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct? |
| A. | It is upright in shape |
| B. | Its base is broad |
| C. | It shows energy content of different trophic level organisms |
| D. | It is inverted in shape |
| Answer» E. | |
| 8. |
The main atmospheric layer near the surface of earth is |
| A. | troposphere |
| B. | mesophere |
| C. | ionosphere |
| D. | stratosphere |
| Answer» B. mesophere | |
| 9. |
The most important human activity, leading to the extinction of wildlife, is |
| A. | Pollution of wildlife, is |
| B. | Hunting for valuable wildlife products |
| C. | Introduction of alien species |
| D. | Alternation and destruction of the natural habitats |
| Answer» E. | |
| 10. |
The earth's atmospheric window is in the: |
| A. | Ultraviolet region |
| B. | Visible region |
| C. | Infrared region |
| D. | Polar regions |
| Answer» D. Polar regions | |
| 11. |
Asiatic lion is found only in _______ |
| A. | Gir Forest |
| B. | Manas |
| C. | Kasiranga |
| D. | Sundarbans |
| Answer» B. Manas | |
| 12. |
The concept of ecological pyramid was first proposed by |
| A. | E.P. Odum |
| B. | A.G. Tansley |
| C. | Juday |
| D. | Charles Elton |
| Answer» E. | |
| 13. |
_______ species is known as Azadirachta Indica |
| A. | Neem |
| B. | Mango |
| C. | Jackfruit |
| D. | Banana |
| Answer» B. Mango | |
| 14. |
The method of simultaneous integration of trees with agricultural crops is called |
| A. | Agro forestry |
| B. | Deforestation |
| C. | Reforestation |
| D. | Combined culture |
| Answer» B. Deforestation | |
| 15. |
Blue whale is placed under |
| A. | Endangered |
| B. | Critically endangered |
| C. | Rare |
| D. | Extinct |
| Answer» B. Critically endangered | |
| 16. |
Wild life protection act was formulated during the period of ______ |
| A. | Mrs. Indira Gandhi |
| B. | Lal Bahadur Shasthri |
| C. | Rajiv Gandhi |
| D. | Morarji Desai |
| Answer» B. Lal Bahadur Shasthri | |
| 17. |
A small quantity of __________ material can produce an enormous amount of energy |
| A. | Metallic |
| B. | Non-metallic |
| C. | Radioactive |
| D. | Conductive |
| Answer» D. Conductive | |
| 18. |
The only known breeding colony of the greater and lesser Flamingos in our country is seen in _______ desert. |
| A. | The Great Rann of Kutch |
| B. | The Thar |
| C. | Ladakh |
| D. | Atacama |
| Answer» B. The Thar | |
| 19. |
In summer, humid regions typically have ________ daily temperature ranges and _______ maximum temperatures than drier regions. |
| A. | Smaller, lower |
| B. | Smaller, higher |
| C. | Larger, lower |
| D. | Larger, higher |
| Answer» B. Smaller, higher | |
| 20. |
Increased surface UV leads to increased __________ ozone |
| A. | tropospheric |
| B. | stratospheric |
| C. | lonospheric |
| D. | exospheric |
| Answer» B. stratospheric | |
| 21. |
Biotic potential is counteracted by |
| A. | Competition with other organisms |
| B. | Producer is the largest |
| C. | Limitation of food supply |
| D. | None of the above |
| Answer» E. | |
| 22. |
"Ozone Hole" is a _____________ |
| A. | Hole in the atmosphere |
| B. | Destruction of ozone layer |
| C. | Hole in the hydrosphere |
| D. | Hole in the troposphere |
| Answer» C. Hole in the hydrosphere | |
| 23. |
Infection of HIV is usually detected by which test |
| A. | Elisa test |
| B. | Hybridization |
| C. | Gram staining |
| D. | None |
| Answer» B. Hybridization | |
| 24. |
What is meant by GM foods? |
| A. | Growth modified foods |
| B. | Genetically modified food |
| C. | Growth marked foods |
| D. | Good mobility food |
| Answer» C. Growth marked foods | |
| 25. |
The conversion of a pond to a climax forest community is an example of |
| A. | xerarch succession |
| B. | mesarch succession |
| C. | hydrarch succession |
| D. | all of these |
| Answer» D. all of these | |
| 26. |
Ozone hole was first discovered in |
| A. | Africa |
| B. | Antarctica |
| C. | India |
| D. | Europe |
| Answer» C. India | |
| 27. |
Expand GIS |
| A. | Geographical Information System |
| B. | Geographical Information Source |
| C. | Geological Information System |
| D. | Geological Index System |
| Answer» B. Geographical Information Source | |
| 28. |
Ozone depletion in the stratosphere will cause |
| A. | increased incidence of skin cancer |
| B. | forest tires |
| C. | global warming |
| D. | none of these |
| Answer» B. forest tires | |
| 29. |
The Native Place of Redwood trees? |
| A. | Australia |
| B. | Amazon |
| C. | California |
| D. | Thailand |
| Answer» D. Thailand | |
| 30. |
Acid rain mainly result from |
| A. | Sulfur dioxide |
| B. | Carbon dioxide |
| C. | Carbon monoxide |
| D. | Ammonia |
| Answer» B. Carbon dioxide | |
| 31. |
Ozone depletion is mostly caused by |
| A. | CO2 |
| B. | CCL |
| C. | CFCs |
| D. | CO |
| Answer» D. CO | |
| 32. |
The true statement about "green house effect" is that it is |
| A. | caused by combination of many gases |
| B. | caused by CO2 |
| C. | caused only by CO2, CFC, CH4 and NO2 gases |
| D. | None of these |
| Answer» D. None of these | |
| 33. |
The place where the worst nuclear disaster took place? |
| A. | Washington |
| B. | Chernobyl |
| C. | Bhopal |
| D. | Japan |
| Answer» C. Bhopal | |
| 34. |
The occurrence of pesticides like DDT in higher trophic levels is termed as |
| A. | bioremediation |
| B. | biomagnification |
| C. | biological enhancement |
| D. | biopollution |
| Answer» C. biological enhancement | |
| 35. |
Energy resources derived from natural organic materials are called |
| A. | geothermal energy sources |
| B. | fossil fuels |
| C. | biomass |
| D. | all of these |
| Answer» C. biomass | |
| 36. |
_________ is the study that deals with the interaction of organisms with their environment. |
| A. | Etiology |
| B. | Ecology |
| C. | Botany |
| D. | Biology |
| Answer» C. Botany | |
| 37. |
Perspiration cools the body by |
| A. | Advective heat transfer |
| B. | Radiative heat transfer |
| C. | Conductive heat transfet |
| D. | Latent heat transfer |
| Answer» E. | |
| 38. |
Photosynthesis is found in |
| A. | Producers |
| B. | Decomposers |
| C. | Consumers |
| D. | Scavengers |
| Answer» B. Decomposers | |
| 39. |
Green House effect is caused by |
| A. | Increase in CO2 |
| B. | Increase in O2 |
| C. | Decrease in O2 |
| D. | Decrease in CO2 |
| Answer» B. Increase in O2 | |
| 40. |
Industrial melanism is an example of |
| A. | protective resemblance with the surrounding |
| B. | drug resistance |
| C. | defensive adaptation of skin against UV radiations |
| D. | darkening of skin due to industries |
| Answer» E. | |
| 41. |
_______ trees shed their leaves during winter and hot summer. |
| A. | ever green |
| B. | coniferous |
| C. | deciduous |
| D. | Shola |
| Answer» D. Shola | |
| 42. |
The largest brackish water lake situated in Asia is in Orissa. Which is the lake? |
| A. | Chilka lake |
| B. | Vembanad lake |
| C. | Woolar lake |
| D. | Dal lake |
| Answer» B. Vembanad lake | |
| 43. |
Major cause of Ozone depletion is due to which chemical? |
| A. | ChloroFluoroCarbons |
| B. | Polyphenols |
| C. | Dioxins |
| D. | Rayon |
| Answer» B. Polyphenols | |
| 44. |
Air is composed of gases, water vapours and |
| A. | rainfall |
| B. | snowfall |
| C. | dust particles |
| D. | light |
| Answer» D. light | |
| 45. |
The conversion of ammonia to nitrate is known as ________ |
| A. | ammonification |
| B. | nitrification |
| C. | denitrification |
| D. | all of these |
| Answer» C. denitrification | |
| 46. |
_________ ecosystems are maintained artificially by man. |
| A. | Man-made |
| B. | Marine |
| C. | Artificial |
| D. | Brackish |
| Answer» B. Marine | |
| 47. |
The practical problem in hydrogen production is its |
| A. | weight |
| B. | valency |
| C. | atomicity |
| D. | chemical property |
| Answer» B. valency | |
| 48. |
Organisms that feed upon other living organisms as a source of energy and nutrients are called as |
| A. | Producers |
| B. | Consumers |
| C. | Pests |
| D. | Decomposers |
| Answer» B. Consumers | |
| 49. |
Bears are usually hunted and killed for their |
| A. | Teeth |
| B. | Skin |
| C. | Gall bladder |
| D. | Nails |
| Answer» C. Gall bladder | |
| 50. |
Thorn-forests are found in the _______ regions |
| A. | semi-arid |
| B. | high rain fall areas |
| C. | low temperature |
| D. | frozen areas |
| Answer» B. high rain fall areas | |